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fix hidden tautology bug on non-learned clauses

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2018-01-21 23:18:41 -08:00
parent ece5ad90e0
commit 3b1810d893
7 changed files with 22 additions and 13 deletions
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3
src/sat/tactic/goal2sat.cpp
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@ -142,6 +142,7 @@ struct goal2sat::imp {
sat::bool_var v = m_solver.mk_var(ext);
m_map.insert(t, v);
l = sat::literal(v, sign);
// if (to_app(t)->get_decl()->get_name() == "XX") IF_VERBOSE(0, verbose_stream() << mk_ismt2_pp(t, m) << ": " << "v" << v << "\n";);
TRACE("sat", tout << "new_var: " << v << ": " << mk_ismt2_pp(t, m) << "\n";);
if (ext && !is_uninterp_const(t)) {
m_interpreted_atoms.push_back(t);
@ -1025,6 +1026,7 @@ void sat2goal::mc::insert(sat::bool_var v, app * atom, bool aux) {
expr_ref sat2goal::mc::lit2expr(sat::literal l) {
if (!m_var2expr.get(l.var())) {
app* aux = m.mk_fresh_const(0, m.mk_bool_sort());
// if (aux->get_decl()->get_name() == "k!81740") IF_VERBOSE(0, verbose_stream() << mk_ismt2_pp(aux, m) << ": " << "v" << l.var() << "\n";);
m_var2expr.set(l.var(), aux);
}
VERIFY(m_var2expr.get(l.var()));
@ -1067,6 +1069,7 @@ struct sat2goal::imp {
app* aux = mc ? mc->var2expr(l.var()) : nullptr;
if (!aux) {
aux = m.mk_fresh_const(0, m.mk_bool_sort());
// if (aux->get_decl()->get_name() == "k!81740") IF_VERBOSE(0, verbose_stream() << mk_ismt2_pp(aux, m) << ": " << "v" << l.var() << "\n";);
if (mc)
mc->insert(l.var(), aux, true);
}